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Community Development Professionals’ Perceptions Of Agritourism In Mississippi, Emma Jane Berry May 2026

Community Development Professionals’ Perceptions Of Agritourism In Mississippi, Emma Jane Berry

Theses and Dissertations

Agritourism has emerged as a strategy for supporting rural economies, strengthening community identity, and increasing agricultural literacy. Although prior research has examined agritourism operators and visitors, limited attention has been given to the perceptions of community development professionals who influence local planning and program support. The purpose of this qualitative exploratory study was to examine community development professionals’ perceptions of agritourism’s role in community development, economic growth, and agricultural literacy in Mississippi. Guided by Social Exchange Theory, data were collected through two semi-structured virtual focus groups with 12 professionals representing Extension, tourism, economic development, and Main Street organizations. Data were …

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Cytokinins, Gibberellins, And Ethylene On Plant Form And Flowering In Streptocarpus, Rachel Bobo May 2026

Cytokinins, Gibberellins, And Ethylene On Plant Form And Flowering In Streptocarpus, Rachel Bobo

Theses and Dissertations

Plant form and flowering of Streptocarpus x hybridus Ladyslippers® ‘Grape Ice’ and ‘Deep Blue Vein’ were examined in response to exogenous application of ethephon [(2-chloroethyl) phosphonic acid], gibberellin 3 (GA3), benzyladenine (BA), and growth retardants ancymidol and chlormequat chloride. 750 mg L-1 ethephon applied at 3 weeks post-transplant (WPT) is effective in chemically pinching premature floral buds, delaying flowering by up to 10 days without restricting final plant size. Early applications of GA3 and BA hasten flowering by up to 10 days. GA3 and BA also interacted to promote floral development when applied early in the production cycle; increasing flower …

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Assessing Differences In The Frequency And Severity Of Osteoarthritis On The Mandibular Condyles Between Males And Females At Tell Abraq, Brittany C. Brown May 2026

Assessing Differences In The Frequency And Severity Of Osteoarthritis On The Mandibular Condyles Between Males And Females At Tell Abraq, Brittany C. Brown

Theses and Dissertations

Tell Abraq, a Bronze and Iron Age site in the United Arab Emirates, was a center of trade and cultural expansion during the Umm an-Nar period (2700–2100 BCE). Its multichambered tombs contain large, commingled burials, reflecting increasing sedentism and agricultural practices. This study examines mandibular osteoarthritis (OA) to explore lived experience and biomechanical stress. A total of 138 adult mandibles were analyzed for sex and OA severity. Results show generally mild and infrequent OA, though preservation limited analysis. Sex estimates suggested more gracile morphologies than previously identified. No strong sex-based differences in OA were observed. Overall, findings highlight the impact …

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An Evaluation Of Mississippi’S Policy For Identifying And Exiting Targeted Support And Improvement (Tsi) And Additional Targeted Support And Improvement (Atsi) Schools, Christopher A. Burrow May 2026

An Evaluation Of Mississippi’S Policy For Identifying And Exiting Targeted Support And Improvement (Tsi) And Additional Targeted Support And Improvement (Atsi) Schools, Christopher A. Burrow

Theses and Dissertations

The Every Student Succeeds Act (ESSA) requires states to identify schools for improvement based on overall performance and the performance of student subgroups. While substantial research has examined CSI schools, limited attention has been given to state policies governing the identification and exit of TSI and ATSI schools. This project evaluates Mississippi’s policy for identifying and exiting TSI and ATSI schools to determine whether the system appropriately identifies underperforming subgroups, promotes sustained improvement, and aligns with ESSA's equity-focused intent. Guided by the policy analysis triangle framework, the study employed a desk-based secondary data analysis of Mississippi’s publicly available state and …

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Characterization Of Water Quality In The Mississippi Sound Using In-Situ And Satellite Observations, William Elliott Butler May 2026

Characterization Of Water Quality In The Mississippi Sound Using In-Situ And Satellite Observations, William Elliott Butler

Theses and Dissertations

The Mississippi Sound is a highly productive estuary facing increasing pressures from natural disasters, oil spills, freshwater inflows, and coastal urbanization, yet it remains insufficiently monitored. In this study, key water quality parameters were quantified at 25 stations across the Mississippi Sound from 2024-2025 and integrated with Sentinel-3 satellite imagery retrievals to generate monthly turbidity maps from 2016-2025. Peak turbidity (~10 FNU) and TSS (~20 mg/L), reduced Secchi depth (~100 cm) and conductivity (~20,000 μS/cm), were observed from late winter to early summer; these conditions varied in fall and early spring. Colored dissolved organic matter was moderate, while chlorophyll-a and …

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Determining Agricultural Literacy Proficiency Of Extension Professionals And Primary Volunteers In Mississippi, Molly Campbell May 2026

Determining Agricultural Literacy Proficiency Of Extension Professionals And Primary Volunteers In Mississippi, Molly Campbell

Theses and Dissertations

The development of agricultural literacy is a lifelong process, moving from gaining agricultural knowledge to communicating with others to applying to societal issues, and extends beyond the formal classroom. The Mississippi State University Extension Service has the ability to reach various audiences through educational programming, making them a potential catalyst for change in increasing agricultural literacy across the state. The study aims to determine the agricultural literacy levels of Extension professionals and primary volunteers in Mississippi and the factors potentially influencing these levels. Twenty-nine Extension professionals and eleven primary volunteers completed a survey of demographic questions and the Judd-Murray Agricultural …

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Mandates Versus Capacity: Utilizing Pace To Proactively Approach Teacher Evaluation For High School Administrators In Mississippi, Jessica Paige Posey Cumberland May 2026

Mandates Versus Capacity: Utilizing Pace To Proactively Approach Teacher Evaluation For High School Administrators In Mississippi, Jessica Paige Posey Cumberland

Theses and Dissertations

A lack of teacher support from administration remains one of the leading reasons provided by teachers leaving the classroom exacerbating the growing teacher shortage nationwide. Over the past twenty years, policies have been passed in the form of teacher evaluation systems in order to ensure support for teachers is provided and that quality educators are servicing public school students in the U.S. Oftentimes relying on already overburdened administrators in the school to provide the mandated support without the consideration of the existing environmental demands of the administrator, specifically time as a resource, the potential for administrators to cope with the …

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From Barriers To Opportunities: Adult Learner Decision Factors And An Implementation Plan For The Awarding Of Credit For Prior Learning, Kristi Leigh Dearing May 2026

From Barriers To Opportunities: Adult Learner Decision Factors And An Implementation Plan For The Awarding Of Credit For Prior Learning, Kristi Leigh Dearing

Theses and Dissertations

With approximately 36 million adults in the nation having some college credit but no degree, these adult learners are the key to filling the gap in the workforce as more jobs will require postsecondary education by 2031 (Jeffe & Rollins, 2024; Carnevale et al., 2023). Adult learners returning to college after sometimes an extended absence encounter barriers that may impact the ability to enroll. Adult learners must balance financial, family, and work responsibilities while completing coursework. By awarding credit for prior learning through portfolio assessment, colleges and universities have an opportunity to recognize the value of the knowledge, experiences, and …

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Regional Variability In Tornado Tracks: A Gis-Based Study Of Surface Roughness And Land Cover Differences Between The Lower Midwest And Southeast United States, Joshua Morgan Dison May 2026

Regional Variability In Tornado Tracks: A Gis-Based Study Of Surface Roughness And Land Cover Differences Between The Lower Midwest And Southeast United States, Joshua Morgan Dison

Theses and Dissertations

Throughout the years, much research has been dedicated to the physical processes leading to tornadogenesis and tornado decay. Much of this research is centered around the inner workings of the supercell itself. Recent studies are now showing that tornadogenesis and decay processes may be generated by interactions with the Earth’s surface. This study examines longtrack tornadoes from 2001-2016 in the southeast and lower Midwest regions of the United States. Utilizing the National Land Cover Database (NLCD) and American Meteorological Society / Environmental Protection Agency / Regulatory Model (AERsurface) surface roughness values, efforts are made to see if statistical significance is …

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From Miocene Origins To Ecological Diversification: Unraveling Evolutionary Dynamics Of North American Asters (Symphyotrichum), Sushil Dahal May 2026

From Miocene Origins To Ecological Diversification: Unraveling Evolutionary Dynamics Of North American Asters (Symphyotrichum), Sushil Dahal

Theses and Dissertations

Symphyotrichum, a plant genus traditionally treated within the genus Aster L., comprises >100 species of annual or perennial plants in the Compositae family Asteraceae. One of the most diverse genera in the southeastern US flora, the genus extends across the Americas, the Caribbean as well as eastern Eurasia. Despite its presence across the major American biomes and with distinctive floristic characteristics, several question regarding Symphyotrichum remains obscure. This research project focuses on exploring diverse aspects of Symphyotrichum systematics, biogeography and evolution. I tested three main hypotheses: (1a) Symphyotrichum originated ancestrally across Mexico and eastern North America in the Miocene ( …

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British Subjects "Of Ye Jewish Religion": The Negotiated Identities Of The Levy-Franks Family, Laura Miriam Drake May 2026

British Subjects "Of Ye Jewish Religion": The Negotiated Identities Of The Levy-Franks Family, Laura Miriam Drake

Theses and Dissertations

Through a series of determined choices over sixty-five years, the Levy-Franks family blended their religious identity as Jews with their claimed British socio-political identity to achieve economic success in eighteenth-century colonial New York. Through colonial records, newspapers, legal petitions, portraits and, most significantly, the letters of Abigaill Levy Franks, this dissertation examines the family’s actions taken to create a blended identity, despite the potential threat that their participation in the broader British Atlantic world posed to their religious selves. During a time in British history when religious identities were at the forefront of political debate, the Levy-Franks family created a …

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Faculty Perceptions Of Transfer Students: How Characteristics And Experiences Inform Faculty Predispositions Toward Transfer Students In Senior Institutions, Tracey Ann Dubard May 2026

Faculty Perceptions Of Transfer Students: How Characteristics And Experiences Inform Faculty Predispositions Toward Transfer Students In Senior Institutions, Tracey Ann Dubard

Theses and Dissertations

Faculty perceptions of student populations have been widely discussed, but the conversation has seldom focused on the transfer student population. Because a third of community college students choose to transfer into four-year institutions, the elements of the environment awaiting them are worthy of exploration. The classroom setting is a shared experience for transfer students. Therefore, faculty can play a significant role in creating a climate of support for this population. However, the opposite may be true. Transfer students often arrive on campus to find an environment that is mostly focused on traditional students. The lack of a supportive environment may …

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Evaluating The Spray Patterns Of Boomless Spray Nozzles At Increasing Application Speeds, Thomas Hayden Duncan May 2026

Evaluating The Spray Patterns Of Boomless Spray Nozzles At Increasing Application Speeds, Thomas Hayden Duncan

Theses and Dissertations

Boomless nozzles have been largely ignored in spray studies, resulting in limited understanding of their spray patterns and how they are affected by operating parameters. A study was conducted to evaluate the effect of application speed on the performance of four boomless nozzles. Dyed water was applied to Kromekote® paper to assess spray distribution based on coverage data at three speeds, and MSMA was applied to a mixed turf stand to evaluate the effect of speed on performance. Overlap simulations were done to evaluate how uniformity could be improved, and nozzle performance was compared to manufacturer claims. Spray patterns of …

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Rethinking Social Disorganization In Rural America: Persistent Poverty, Institutional Fragility, And Crime, Addison Finch May 2026

Rethinking Social Disorganization In Rural America: Persistent Poverty, Institutional Fragility, And Crime, Addison Finch

Theses and Dissertations

Social Disorganization Theory (SDT) links structural disadvantage to crime through mechanisms such as residential instability, weakened social networks, and reduced informal social control in urban neighborhoods. Less is known about whether these mechanisms operate similarly in persistently poor rural communities where disadvantage is enduring rather than destabilizing. This study examines whether variation in poverty intensity predicts county-level crime in nonmetropolitan, persistently poor counties in Kentucky and Tennessee from 2016 to 2023. A balanced county-year panel (N = 344) integrates incident-based crime data with measures of poverty intensity and institutional capacity. Pooled ordinary least squares models with year fixed effects and …

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The Role Of Risk And Resilience In Psychological Distress: An Application Of The Minority Stress Model, Rachel Clair Franklin May 2026

The Role Of Risk And Resilience In Psychological Distress: An Application Of The Minority Stress Model, Rachel Clair Franklin

Theses and Dissertations

LGBT individuals experience disproportionate levels of psychological distress compared to heterosexual populations, often attributed to minority stressors, including experiences of discrimination and victimization. Guided by the Minority Stress Model, the present study examined whether social and community support moderated the relationship between minority stress and psychological distress, and whether rejection sensitivity and fear of discrimination mediated these associations. Data were collected from a sample of 251 individuals who self-identified as lesbian, gay, bisexual, or transgender in the United States. Multiple regression, moderation, and mediation analyses using the PROCESS macro were conducted to examine relationships among experiences of discrimination, sexuality-based victimization, …

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Assessment Of Energy And Hydration Demands Of Farm Workers In Mississippi, Mckenzie Lynne Hargrove May 2026

Assessment Of Energy And Hydration Demands Of Farm Workers In Mississippi, Mckenzie Lynne Hargrove

Theses and Dissertations

The agricultural community in Mississippi is critical to the state’s economy and the health of its communities. Farm workers meet these needs by performing highly demanding work with long hours of labor, limited resources, and stressful environmental conditions. The purpose of this investigation was to examine and measure indicators of physiological and behavioral adaptations to the heat such as whole body sweat rate (WBSR), sweat sodium (Na+) content, urine specific gravity (USG), and fluid intake, as well as determine total daily energy expenditure (TEE) and water influx (rH2O) via the doubly labeled water technique (DLW) in farm workers during the …

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Adaptive Channel Switching For Contention Resolution, Shafqat Hasan May 2026

Adaptive Channel Switching For Contention Resolution, Shafqat Hasan

Theses and Dissertations

Contention resolution is a fundamental problem in distributed computing, where multiple devices compete to transmit over a shared channel without centralized coordination. Classical models typically assume a single always-available channel and focus on minimizing makespan. However, modern wireless systems increasingly operate under spectrum-sharing frameworks in which access to high-capacity spectrum is opportunistic and may be interrupted by higher-priority users. These settings introduce new challenges, including asymmetric channel speeds, adversarially scheduled evictions, and non-trivial switching costs. In this thesis, we study contention resolution in a dual-channel model consisting of a slow, always-available channel and a faster channel subject to adversarially scheduled …

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Investigating Teacher Cognition Of Teaching Spatial Thinking Among Middle And High School Stem Teachers: A Knowledge, Belief, And Attitude Perspective, Jonathan Grant Harris May 2026

Investigating Teacher Cognition Of Teaching Spatial Thinking Among Middle And High School Stem Teachers: A Knowledge, Belief, And Attitude Perspective, Jonathan Grant Harris

Theses and Dissertations

Spatial thinking is a critical cognitive ability that supports learning and problem solving across science, technology, engineering, and mathematics (STEM) disciplines. Despite extensive research highlighting the importance of spatial thinking in STEM achievement and career success, limited research has examined STEM teachers’ cognition of spatial thinking or developed instruments to measure it. The purpose of this study was to investigate middle and high school STEM teachers’ cognition of spatial thinking, including their perceived pedagogical content knowledge (PCK) of spatial thinking, self-efficacy beliefs about teaching spatial thinking, and attitudes toward spatial thinking as a critical component of STEM learning and achievement. …

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Assessing Biotic And Abiotic Drivers Of Hybridization And Species Delimitation In A Highly Reticulate Syngameon, Nicholas John Engle-Wrye May 2026

Assessing Biotic And Abiotic Drivers Of Hybridization And Species Delimitation In A Highly Reticulate Syngameon, Nicholas John Engle-Wrye

Theses and Dissertations

Hybridization, or the flow of genetic materials between varieties or species, shapes evolution by generating novel genotypes, altering allele frequencies, and driving diversification. Yet, the rate at which hybridization occurs is heterogeneous across the tree of life and the ecological and evolutionary factors that govern its occurrence remain poorly understood. This dissertation examines how conserved biotic and abiotic niches influence hybridization and uses integrative methods to delimit species boundaries within Heuchera (Saxifragaceae), a genus notable for widespread interspecific gene flow and cryptic morphological diversity. Results reveal that hybridization is most frequent where pre- and postzygotic barriers are weak, as with …

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Root-Cause-Analysis Of Crane System Variable Frequency Drive Failures Through Testing And Power Quality Analysis, Elizabeth Hayes May 2026

Root-Cause-Analysis Of Crane System Variable Frequency Drive Failures Through Testing And Power Quality Analysis, Elizabeth Hayes

Theses and Dissertations

This study investigates the root-cause-analysis of repeated failures of an AC-DC converter in a variable frequency drive system on a 325-Ton crane through electrical testing based on NETA and IEEE standards. The testing is accompanied with a power quality study based on the IEEE 519-2019, simulation using SKM power modeling software, and fault study from two captured faults. The converter failures presented no immediate solution despite experienced technicians, engineers, and other specialists. This study attempts to eliminate root-cause by examining the line-side equipment and in-feed power quality as contributions to the converter faults.

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A Research-Informed Wellness Guide For Creating A Culture Of Educator Wellness And Retention In Schools, Anthony L. Herbert May 2026

A Research-Informed Wellness Guide For Creating A Culture Of Educator Wellness And Retention In Schools, Anthony L. Herbert

Theses and Dissertations

Teacher attrition in high-poverty K–12 schools continues to undermine instructional continuity, organizational stability, and educational equity. While compensation and accountability pressures contribute to turnover, emerging research identifies workload intensity, emotional exhaustion, and the absence of systemic wellness supports as central drivers of burnout and departure decisions. The purpose of this capstone project is to develop a research-informed wellness guide designed to assist site-based leaders in embedding educator wellness within school systems as a strategic approach to improving teacher retention. This study addresses the question: What leadership strategies and school-level practices does the research recommend for creating supportive, wellness-centered environments in …

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Evaluation And Mitigation Of Bias And Toxicity In Open-Source Large Language Models Using Crows-Pairs And Bold, Sai Harika Gade May 2026

Evaluation And Mitigation Of Bias And Toxicity In Open-Source Large Language Models Using Crows-Pairs And Bold, Sai Harika Gade

Theses and Dissertations

This thesis evaluates bias and harmful language generation in five open-source language models and tests practical mitigation methods that do not require retraining. Two masked models are assessed with a sentence-pair benchmark for stereotype preference, and three generative models are assessed with a prompt-based benchmark for harmful continuations across demographic domains. The study uses a unified experimental workflow to compare model behavior, summarize differences across bias categories, and measure changes after intervention. Results show that the masked models favor stereotypical content above a random baseline, while the generative models usually produce low average toxicity but still show uneven risk across …

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Developing And Evaluating U.S. Army Bridging For Ship Simulation, Jacob C. Hodges May 2026

Developing And Evaluating U.S. Army Bridging For Ship Simulation, Jacob C. Hodges

Theses and Dissertations

This research investigates the intricacies of ship simulation and developmental processes for integrating wet gap crossing capabilities into a simulated environment. The US Army Mark III Bridge Erection Boat (BEB) and Improved Ribbon Bridge (IRB) were modeled in commercial off the shelf (COTS) and Government Co-Owned (GCO) navigation software suites to determine their performance capabilities and limitations. Each model was constructed using naval architecture concepts to accurately capture their hydrostatic and hydrodynamic effects before being validated against available performance data and expert elicitation from expert US Army watercraft operators. Models were configured and tested in simulated river flows with current …

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An Exploration Of The Experiences Influencing The Trajectory Of Black Women Mid-Level Managers Into Senior-Level Administration At Predominantly White Institutions, Christine Hampton Jackson May 2026

An Exploration Of The Experiences Influencing The Trajectory Of Black Women Mid-Level Managers Into Senior-Level Administration At Predominantly White Institutions, Christine Hampton Jackson

Theses and Dissertations

This qualitative study explored the experiences of Black women in mid-level, non-faculty management roles at public Predominantly White Institutions (PWIs) in the Southeastern United States, with a focus on how these experiences influence their pathway into senior-level administrative positions. Grounded in Black Feminist Thought, the research utilized narrative inquiry to center the voices of Black women, recognizing their lived experiences as valuable and often underrepresented sources of knowledge in higher education leadership literature. Three research questions guided the study: (1) What experiences do Black women consider the most significant in their trajectory from mid-level manager to senior-level administrator at Predominantly …

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Exclusionary Disciplinary Composition Outcomes: Schools With High African American Enrollments And Schools With Low African American Enrollments, Darrell A. Jones May 2026

Exclusionary Disciplinary Composition Outcomes: Schools With High African American Enrollments And Schools With Low African American Enrollments, Darrell A. Jones

Theses and Dissertations

Racial disparities in exclusionary disciplinary outcomes remain consistently documented across United States public schools, with African American (AA) students disproportionately represented in in-school suspension (ISS) and out-of-school suspension (OSS) outcomes. The purpose of this quantitative comparative study was to examine whether statistically significant differences existed between (a) the percentage of students receiving ISS who were AA and (b) the percentage of students receiving OSS who were AA in selected Mississippi public high schools with high AA enrollment (≥70%) and low AA enrollment (≤30%) during the 2022–2023 and 2023–2024 academic years. The study utilized archival, publicly available, school-level discipline and enrollment …

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Development And Application Of An Edna Protocol For The Detection Of Gulf Coast Walleye (Sander Vitreus) In Mississippi, Kevin W. Jones May 2026

Development And Application Of An Edna Protocol For The Detection Of Gulf Coast Walleye (Sander Vitreus) In Mississippi, Kevin W. Jones

Theses and Dissertations

The Gulf Coast Walleye (Sander vitreus) is a genetically unique Walleye population endemic to the southeastern United States and is increasingly threatened due to habitat loss. The current distribution of this population is poorly understood, especially in the upper Tombigbee River Basin in Mississippi. We developed an environmental DNA (eDNA) sampling method for Gulf Coast Walleye by modifying an existing quantitative PCR (qPCR) assay. Our assay tested highly sensitive for Walleye DNA and presented a minimal risk of cross-amplifying co-occurring nontarget species. We then applied the assay to samples from 26 streams in the upper Tombigbee Basin and positive controls. …

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Mapping And Measuring Sidewalk Network Connectivity In Starkville, Mississippi: The Role Of Policy-Required Development, Public Investment, And Destination Access, Isabella R. Jones May 2026

Mapping And Measuring Sidewalk Network Connectivity In Starkville, Mississippi: The Role Of Policy-Required Development, Public Investment, And Destination Access, Isabella R. Jones

Theses and Dissertations

Sidewalks support pedestrian mobility, public health, social community, and access to destinations, but few studies explore sidewalk connectivity in small cities. This study examines changes in sidewalk network connectivity in Starkville, Mississippi after the adoption of a sidewalk ordinance in 2009. Using ArcGIS Pro, a dataset of the city’s sidewalk network was created and used to analyze changes in the network between 2009 and 2024. Sidewalks were given connectivity ratings using a system that considered physical connections to the network as well as proximity to important destinations such as grocery stores, parks, schools, bus stops, and the city’s hospital. The …

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Evaluation Of Critical Nitrogen Requirements For Commercial Tomato Production In Mississippi, Prakash Khanal May 2026

Evaluation Of Critical Nitrogen Requirements For Commercial Tomato Production In Mississippi, Prakash Khanal

Theses and Dissertations

Optimizing nitrogen (N) management is critical for tomato production, as crop requirements vary with soil, climate, and production practices. Despite the importance of tomato in Mississippi, region-specific N recommendations remain limited. Field studies (2024-2025) and a high tunnel study (2025) were conducted at the North Mississippi Research and Extension Center to determine critical N rates for fresh-market tomato. Six N rates were evaluated using a randomized complete block design with four replications. Results provide system-specific guidance, highlighting differences in N requirements between open-field and high tunnel production. Tailoring N inputs to production environments can improve yield and fruit quality, enhance …

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Is It Time To Reconsider Plant Populations Of Top Mississippi Corn Hybrids?, Jason Kober May 2026

Is It Time To Reconsider Plant Populations Of Top Mississippi Corn Hybrids?, Jason Kober

Theses and Dissertations

In Mississippi (MS), a 5.6 Mg ha-1 yield gap exists between the potential and actual corn (Zea mays L.) grain yield. The disparity underscores unrealized yielding potential of modern hybrids under current agronomic management practices. This study evaluated the yield response of four commercially grown top performing hybrids planted at five plant densities (6.2, 7.4, 8.6, 9.9, and 11.1 plants m-2) across four locations in MS over two years. Grain yield and kernel weight were subject to analysis of variance. The analysis was performed two ways: hybrid-level analysis (HA) using two hybrids common across all site-years, and location-level analysis (LA) …

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Low-Dimensional Metal Halides For Light-Emitting Diodes (Leds): Photophysical Aspects And Device Engineering, Udara Madushanka Kuruppu Kuruppu Achchige Don May 2026

Low-Dimensional Metal Halides For Light-Emitting Diodes (Leds): Photophysical Aspects And Device Engineering, Udara Madushanka Kuruppu Kuruppu Achchige Don

Theses and Dissertations

In recent years, low-dimensional metal halides have garnered significant interest due to their exceptional optical properties. This dissertation focuses on the structural, optical, and photophysical properties of both lead-based and lead-free low-dimensional metal halides and investigates their applications in light-emitting diodes. In Chapter II, the nature of Mn2+ doping in two-dimensional (2D) lead halide perovskites is discussed. 2D perovskites show strong excitonic and dielectric confinement due to their quantum well structures. Introducing optically active Mn²⁺ dopant ions into these 2D perovskites further enhances their optical properties and promotes energy transfer from the host to the Mn²⁺ dopants, resulting in dual …

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